Corridor-door lock.



PATENTED FEB. 19, 1907.

m. mmuzu.

H. G. VUIGHT. CORRIDOR DOOR LOCK. APPLICATION FILED 0012111906.

2 SHBETH SHBBT 1,

" wi i meweo B SHEETB-BHEET 2 T 0 9 1 9 8 E P D E T N E T A P w Kw T M HW aw 10D O V m .R UN Dw m Rm 0L Cw 0 2 5 4. 8 m N 3% v0 1 to; a 1 010lwin Leases CORRIDOR-DOOR LOOK.

Be it known that l, llriNui' (i. Voioii'r, citizen of the United States,residing at New Britain, county of Hartford, Coiiiieetieut, haveinvented certain new and useful [Inproveineiits in (orridor Door Locks,of which the following" is a tail, elear, and exact description.

This invention relates to improvements in looks, and is particularly .2.ehil in connection with corridor-doors for hotels and the like. In suchlooks it is d looking deviee for the inner side of the door, whichdevice when thrown into action makes it ii'npossible to operate thelatch-bolt by means of anything but a s ieeial key, called a giai'idmastenkey, which Will operate both the bolt-actu dead-loeking ineaiis.By this arrangement the guest may have one key adapted ate a single lookfrom the outside of the door, but not the deadlock. The floor attendantmay have a master-key adapted to operate the bolt-retracting means inany group of looks, but not any lock which has been deadlocked from theinner side of the door. The proprietor may have a third key, which istermed the grand ii'iasterl :ey, by which he may unlock any door on anyfloor wl'iether it is deaddocked or not. The construction is also suchthat when the door is dead-locked no key but the grand inastor-l-teywill have any eil'cct whatever upon any of the locks, and any oneatten'i 'iting to use a key excepting said grand inastenkey may insertthe same in the keyhole and turn it freely without meeting anyobstruction. This relieves all strain on the look mechanism and alldanger of breaking a key. These objects and others are attained, as willbe apparent to mechanics skilled in the art from a reading of thefollowing description.

n the accompanying drawings, Figure 1 g is an elevation of a lock withthe side reoved to show the internal arrangement of i arts being inarts, said a osition where he dead-loo is thrown off. ig. 2 is a simi-'lar view, the dead-lock being thrown on. --,Fi 3 is a section on theline 3 3 of Fig. l.

The usual lock-ease is provided,- in Which is contained the variousoperating parts. In this construction the outer side of the lock is l El l i F l l l esilatie to have a deadating means, as well as the 3 sideof the door only, so tl l l to oper- I opened from the outer side by theuse of a Specification of Letters Patent. Anphmttion tiled October17,1905

Serial No 33 3,293

titted with two pi key, as well as t other is to take th 1 the lock illin aster keys.

key.

i stein and spring-p i to cause it to he ii i 1 is the usual roll-[nick5, whil l therelrv.

l 7 is a pivoted l one end, the other l g'iigeiiient with the l Theknob-spind key only.

8 is a dogging-slide guided in the and arranged to move to and is al].)i'o ectioii on t] ranged wien the dead-lock the latch-bolt 5 boltfree to he retracted.

'l, ASSIUNUH.

indor type, one olwhich is I, is a latch-holt having e 6 is the slideactuated .l() HUS- N l l W BRITAIN, (JON- Patented Feb. 19, mom

or locks of the eylto take the ehange- ,he IJIEESItOI-h'tj', while the egrand nuistenkey.

lapted to the change and 2 is the lock adapted to the grand nuister- Ithe usual guidingressed in the usual manner orinally project d.knob-spindle eairying the lever engaged by slide (3 at end. makingoperative enateh-holt 3.

le has a knob on the inner iat the door can be lock-ease fro.

1e doggnigsl de ar in one position to (see Fig. 2) and position to leavethe said (bee Big. 1.!

slide is E) is the tuinhler, pivotally carried by the slide 8.

10 is a stop on the loclve-ase.

l I when in another l \"Vhen the s l of the stop l device is in F andthe hack.

opposite side of the said the dogging device is out of action and otbeeoine. aceiden are shoulders on F1 1 will n 8 and 8 slide, saidshoulde site sides of the end of the tuinb 11 is a roll-back tumbler 9and shoulder 8 tioii shown in Fi When the thum verse direction, th

Same cannot be retracted id stop-sl is a stop-shoulder on the tumblervtop-shoulder 9 rests on that side 10 shown in Fig. 2, the dogg ingetch-bolt, or pushed ioulder 9 is on the stop 10, as shown in einentwith the l tally dis )laced.

the doggingrs being arranged on oppooperated by a thumb-turn he innerside of the door. urn 1 l the and free the ageinent with the ide frointhe positurn is rotated in the res roll-back 11 will first free LII thetumbler 8 and then by engagement with the shoulder 8 move the slide fromthe position shown in Fig. 2 t i that shown in Fig. I. By this means thedogging device may be moved into and out of action.

12 is a lever pivutally carried by the slide H. One end ol' this leverengages the latch-bolt 3, while the other end, (when the slide is in lthe position shown in Fig, ll is within the range of action of a camIii, operated by a key inserted in the luck 'l'rom the outer side of thedoor. When, however, the slide is in the position SllUWll in Fig. 2,this end ol the lever 12 will be out of the range of action of the cam15' \Vhen the grand mastenkey is introduced in the lock 12 from theoutside and turned, the cam 13 will on the lirst turn lift the tumbler 9and then shift the slide S to the position shown in l ig. 1. A furtherpartial turn ill cause the can] 13 to lift the lever 12 and draw thebolt 3 'lhus in all instances the lock may be operated from the outsideby the use of a grand niaster-lwy, a 'l'eature of great value,particularly in the case of aeeident to the occupant ol' a room who haspreviously dead-loclnwl the door and who needs assistance Now as to theuse of the change-key and master-key. These keys are adapted to lock 1.\Vhen the room is cn'ipty, the parts stand as in Fig. 1.. When in thisstate, the latchbolt may be retracted by either of said keys.

14 is a lever pivoted at 14. (inc end of this 1e ver is connected ithslide 8, so that said lever will be rocked as said slide moved t and fro14" is a bell-crank lever pivoted ta the lever 14v 14 a nose on 14",which nose bears against lever 7. 14 is one arm of said bell-wrank,which arm stands elevated or depressed according to the position of thedogging-slide Now it a user of a room en ters the same and dead-locksthe slide he thereby sets the parts as shown in Fig. The arm 14 isthereby moved out of the range of action of cam. 15 on lock 1.. Hence atsuch times the latch-bolt I} cannot be retracted by any key inserted insaid lock. At such a time only the holderoi a grand mas ter-key can getin. Such a key, as above described, is adapted t) lock 2 and by the useof same the dogging-slide may be iirst retracted and then thelatclvbolt.

hat is claimed is-- 1. In a lock, a latch-bolt, a'deaddoctnngdGViCG,"TTlBILl1S to actuate said dead-locking device from the innerside of the lock, means independent of the first and outside of the lockto actuate said dead-locking device and retract the bolt, and additionaland independent means for retracting the bolt from ot' actuating thedead-locking device, and a hnul -contr\illed spindle for retracting thelatch-bolt independently of either of the'lirst mentioned means 3. In alack, a latch-bolt, a dead-lock therefor, means to actuate saiddead-lool from the inside ot a door, and two independent key- 'ontrnlledmeans for actuating the latch-bolt from the outside oi the door, one ofi said keywontrolled means cooperating with the deadlock whereby thelatter may be ast oil preparatory to retracting: the latch bolt by thesaid means.

1. in a lock, a latch-bolt, a dead-lock therefor, means to actuate saiddead-lock from the inside of a door, two independent l ey-eontrolledmeans or actuating the latchbolt from the outside of the door, one ofsaid key controlled means coi'iperating with the dead-lock whereby thelatter may be retracte ed preparatory to retracting the latch-bolt bythe same means and a lilli'llJ-CUIIU'OllECl spindle accessible tron: oneside of the door and operatively connected with the latchbolt.

5. in a lock, a lateleholt, a knob-spindle opmatively connected with thelatch-bolt, a dead-locking device for said bolt, means at the inside ofthe door for operating the same, and two independentlykeycontralledmeans on the outside of the d nor for operating said latch, one of saidlastsmentioned means also operating the dead-locking device.

6, In a lock, a latch-bolt, a dead-lock therefor, means for operatingsaid deaddock from the inside of the door and including a roll-backonerahle from the outer side of the door only tor operating saiddead-lock, said means being operativcly connected with said latch-holtwhen the dead-lock is oil, and additional and independent meansexternally of the door for retracting the latch, includingkcy-contralled mechanism discore nected from the latch when thedead-lock is HENRY (i. VOIGHT.

Witnesses G. ERNEST Roor, VVM. V. COLLINS.

